EP0214976B1 - Device for heating an aerosol - Google Patents
Device for heating an aerosol Download PDFInfo
- Publication number
- EP0214976B1 EP0214976B1 EP85902460A EP85902460A EP0214976B1 EP 0214976 B1 EP0214976 B1 EP 0214976B1 EP 85902460 A EP85902460 A EP 85902460A EP 85902460 A EP85902460 A EP 85902460A EP 0214976 B1 EP0214976 B1 EP 0214976B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- aerosol
- heating
- breathing air
- air hose
- temperature
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
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Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
- A61M16/10—Preparation of respiratory gases or vapours
- A61M16/1075—Preparation of respiratory gases or vapours by influencing the temperature
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
- A61M16/08—Bellows; Connecting tubes ; Water traps; Patient circuits
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
- A61M16/10—Preparation of respiratory gases or vapours
- A61M16/105—Filters
- A61M16/1055—Filters bacterial
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
- A61M16/10—Preparation of respiratory gases or vapours
- A61M16/105—Filters
- A61M16/106—Filters in a path
- A61M16/107—Filters in a path in the inspiratory path
Definitions
- the invention relates to a device for generating an aerosol, which has a flexible spiral breathing air hose, via which the aerosol generated by a nebulizer clamp can be guided to the patient, wherein at least one heating wire is arranged in the breathing air hose for heating the generated aerosol.
- the breathing air hose consists of a flexible plastic hose with a smooth inner wall, preferably with a heating resistor inserted loosely into the cavity.
- the aerosols sweep along the heating wires, with an uncontrollable cooling of the aerosols occurring on the unheated wall of the breathing air hose.
- the aerosols supplied must be sterile. Germ-free aerosols can only be generated with devices that work themselves germ-free.
- the breathing air hose and the heating wires loosely arranged in the hose are each made sterile in an autoclave or a sterilizer. This work is complex and requires the greatest care. There is no guarantee that both parts will always be made perfectly sterile and reinstalled in perfect hygienic condition.
- the fine atomization of medicine in the aerosol device while heating to a prescribed temperature cannot be exactly controlled with heating wires loosely inserted into the breathing air hose.
- the exact dosage of the medication depends on the temperature and the relative humidity. Cooling down with condensate formation in the breathing air tube also results in a loss of active substance, as does warming up with corresponding water saturation in the bronchial system if the aerosol is supplied at a lower temperature and with a corresponding relative fencing or medication concentration.
- the exact dosage of the active ingredient supply is only possible if, in addition to a guaranteed particle size of the aerosols, the temperature is kept constant at the body temperature level with the corresponding maximum moisture.
- a heating adapter is arranged in the breathing air hose between the nebulizer clip and the patient connection in order to heat up the aerosols.
- the heating adapter In order to ensure body temperature levels when the aerosol enters the bronchial system and to compensate for the cooling effect on the way through the breathing air hose, the heating adapter must first heat the aerosol to a higher temperature. As a result, the maximum relative humidity is undercut in the heating section and subsequently condensate is formed by cooling, which is deposited on the wall of the breathing air hose. In this way, there is also the danger that larger drops of water will be carried along with the breath current.
- a respirator is known with which a highly humid air is to be supplied, preferably after saturation while avoiding the formation of condensed water.
- the feed hose is formed from a flexible tube made of plastic with a smooth inner and a smooth outer wall, an electrical resistance being incorporated in a spiral in the wall. This resistance built into the hose works as a secondary heater.
- the object according to this FR-A therefore refers to another genus and has no spiral feed hose.
- the device described in US-A-4 121 583 relates to a portable inhaler for asthma sufferers.
- the patient inhales warm and humidified air through a mouthpiece, which is modified inside the generator.
- a heating spiral is wrapped between each turn of a spiral carrier, the heating spiral being formed by a central heating wire with a covering material.
- a suggestion for heating an aerosol in the breathing air hose of a device for producing an aerosol could not be taken from this US-A.
- the present invention is based on the object of designing a device of the type shown so that uniform heating of the aerosol is ensured in the entire breathing air hose without the aerosol coming into direct contact with the heating wires used for heating, with deviations from the preselected temperature are immediately recognizable.
- this object is achieved in that the heating wire or wires are arranged in or form the spirals of the breathing air hose and that an acoustic and / or an optical signal transmitter is used to indicate a deviation of the temperature of the outflowing aerosol measured at the outlet of the breathing air hose from a specified temperature is arranged.
- an external line can be arranged, which can be connected to the housing of the device via a plug.
- the power supply cable to the heating wires is not visually visible. If the power supply to the heating wires is arranged in the nebuliser chamber, it is advisable to use the vertical air channels for this.
- heating wires are fed with a weak current of approx. 6-8 volts, either a correspondingly assigned transformer or an additional winding on an already existing transformer is expediently arranged in the housing.
- the invention creates the possibility of supplying the generated aerosol to the patient at a respectively fixed temperature without the heating wires required for heating coming into contact with the aerosol.
- the aerosol is heated evenly throughout the breathing air hose. Since aerosol devices are also used in patients who are not able to indicate changes in the temperature of the aerosol supplied, the arrangement of an acoustic and / or an optical signal generator always ensures that deviations from the specified temperature are immediately recognized and if necessary, a correction can be made.
- FIG. 1 An embodiment of the invention is shown in the drawing and will be described in more detail below.
- the single figure shows a device for generating an aerosol.
- the housing 4 is arranged on a mobile substructure 11.
- a removable nebulizer chamber 1 is arranged on the top of this housing 4.
- a fan wheel and a bacteria filter are combined in a breathing air cassette 2 to form a structural unit and are removably arranged next to the nebulizer chamber 1.
- Arranged on the chamber lid 12 are a connecting tube 9 coming from a disposable glass infusion bottle 7 fastened in a bottle holder 8 and a breathing tube 5 leading to the patient, which is expediently guided on a holding arm 6.
- the spiral breathing air hose 5 is heatable.
- the steel spirals of the flexible breathing air hose 5 serve as heating wires.
- the current supply to the heating wires takes place via a supply line 10.
- the temperature can be set via a switch 3 arranged on the housing 4.
- the switch 13 is used to switch the power supply for the heating wires on and off.
- a temperature display 14 is also provided on the front of the housing 4.
Landscapes
- Health & Medical Sciences (AREA)
- Emergency Medicine (AREA)
- Pulmonology (AREA)
- Engineering & Computer Science (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Hematology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Thermotherapy And Cooling Therapy Devices (AREA)
- Respiratory Apparatuses And Protective Means (AREA)
Abstract
Description
Die Erfindung betrifft eine Vorrichtung zur Erzeugung eines Aerosols, die einen flexiblen spiralförmigen Atemluftschlauch aufweist, über den das von einer Verneblerklammer erzeugte Aerosol zum Patienten führbar ist, wobei zum Aufheizen des erzeugtn Aerosols im Atemluftschlauch mindestens ein Heizdraht angeordnet ist.The invention relates to a device for generating an aerosol, which has a flexible spiral breathing air hose, via which the aerosol generated by a nebulizer clamp can be guided to the patient, wherein at least one heating wire is arranged in the breathing air hose for heating the generated aerosol.
Bei den bekannten Vorrichtungen zur Erzeugung eines Aerosols besteht in verschiedenen Anwendungsfällen die Forderung, dass das erzeugte Aerosol in einer bestimmten Temperatur dem Patienten zugeführt wird. Zum Erwärmen des erzeugten Aerosols sind im Hohlraum des Schlauches isolierte Heizdrähte eingelegt. Das Aerosol kommt also direkt mit den Heizdrähten in Berührung. Gemäss DE-A-3316 322 besteht der Atemluftschlauch aus einem flexiblen Kunststoffschlauch mit glatter Innenwand mit vorzugsweise lose in den Hohlraum eingelegtem Heizwiderstand.In the known devices for producing an aerosol, there is a requirement in various applications that the aerosol produced is supplied to the patient at a specific temperature. Insulated heating wires are inserted in the hollow space of the hose to heat the aerosol generated. The aerosol therefore comes into direct contact with the heating wires. According to DE-A-3316 322, the breathing air hose consists of a flexible plastic hose with a smooth inner wall, preferably with a heating resistor inserted loosely into the cavity.
Die Aerosole streichen bei einer solchen Ausführung an den Heizdrähten entlang, wobei an der nicht aufgeheizten Wandung des Atemluftschlauches eine nicht kontrollierbare Abkühlung der Aerosole auftritt. Ausserdem bestehen erhebliche Bedenken in hygienischer Hinsicht. Um eventuelle Infektionen zu vermeiden, müssen die zugeführten Aerosole keimfrei sein. Keimfreie Aerosole lassen sich jedoch nur mit Vorrichtungen erzeugen, die selbst keimfrei arbeiten. Hierzu müssen u.a. der Atemluftschlauch und die lose im Schlauch angeordneten Heizdrähte jeweils in einem Autoklaven oder einem Sterilisator steril gemacht werden. Diese Arbeit ist aufwendig und erfordert grösste Sorgfalt. Eine Gewähr dafür, dass beide Teile stets einwandfrei steril gemacht und in hygienisch einwandfreiem Zustand wieder eingebaut werden, gibt es nicht. Es bleibt überwiegend der Sorgfalt des bedienenden Personals überlassen, dass der Atemluftschlauch und die Heizdrähte völlig steril wieder an das Aerosolgerät angeschlossen -werden. Der bekannte Erwärmungseffekt ist inhomogen und kann demzufolge zu Strömungsturbulenzen führen. Wechsende Temperaturen im Atemluftschlauch und Strömungsbehinderungen mit Turbulenzen sind aber wiederum Ursache für Kondensatbildungen, die wegen der Gefahr der Wasseraspiration vermieden werden sollten.In such an embodiment, the aerosols sweep along the heating wires, with an uncontrollable cooling of the aerosols occurring on the unheated wall of the breathing air hose. There are also significant hygienic concerns. In order to avoid possible infections, the aerosols supplied must be sterile. Germ-free aerosols can only be generated with devices that work themselves germ-free. Among other things, the breathing air hose and the heating wires loosely arranged in the hose are each made sterile in an autoclave or a sterilizer. This work is complex and requires the greatest care. There is no guarantee that both parts will always be made perfectly sterile and reinstalled in perfect hygienic condition. It is largely left to the care of the operating personnel that the breathing air hose and the heating wires are reconnected to the aerosol device in a completely sterile manner. The known warming effect is inhomogeneous and can therefore lead to flow turbulence. However, changing temperatures in the breathing air hose and flow restrictions with turbulence are in turn the cause of condensate formation, which should be avoided due to the risk of water aspiration.
Die Feinstzerstäubung von Medizin im Aerosolgerät bei gleichzeitiger Aufheizung auf eine vorgeschriebene Temperatur ist bei lose in den Atemluftschlauch eingelegten Heizdrähten nicht exakt kontrollierbar. Die exakte Dosierung der Medikamente ist abhängig von der Temperatur und der relativen Feuchte. Eine Abkühlung mit Kondensatbildung im Atemluftschlauch hat ebenso einen Wirkstoffverlust zur Folge wie eine Aufwärmung mit entsprechender Wasseraufsättigung im Bronchialsystem, wenn das Aerosol mit einer niedrigeren Temperatur und einer entsprechenden relativen Fechte bzw. Medikamentenkonzentration zugeführt wird. Die exakte Dosierung der Wirkstoffzufuhr ist somit nur möglich, wenn neben einer garantierten Teilchengrösse der Aerosole auch die Temperatur auf Körpertemperaturniveau mit entsprechender maximaler Feuchte konstant gehalten wird.The fine atomization of medicine in the aerosol device while heating to a prescribed temperature cannot be exactly controlled with heating wires loosely inserted into the breathing air hose. The exact dosage of the medication depends on the temperature and the relative humidity. Cooling down with condensate formation in the breathing air tube also results in a loss of active substance, as does warming up with corresponding water saturation in the bronchial system if the aerosol is supplied at a lower temperature and with a corresponding relative fencing or medication concentration. The exact dosage of the active ingredient supply is only possible if, in addition to a guaranteed particle size of the aerosols, the temperature is kept constant at the body temperature level with the corresponding maximum moisture.
Bei einer anderen Ausführung ist zur Aufheizung derAerosole im Atemluftschlauch zwischen Verneblerklammer und Patientenanschluss ein Heizadapter angeordnet. Um Körpertemperaturniveau beim Eintritt des Aerosols in das Bronchial-System zu gewährleisten und den Abkühlungseffekt auf dem Weg durch den Atemluftschlauch zu kompensieren, muss der Heizadapter das Aerosol zunächst mit einer höheren Temperatur aufheizen. Dadurch wird im Abschnitt der Aufheizung die maximale relative Feuchte unterschnitten und nachfolgend durch Abkühlung Kondensat gebildet, das sich an der Wandung des Atemluftschlauches niederschlägt. Auf diese Weise entsteht auch die Gefahr, dass grössere Wassertropfen mit dem Atemstrom mitgerissen werden.In another embodiment, a heating adapter is arranged in the breathing air hose between the nebulizer clip and the patient connection in order to heat up the aerosols. In order to ensure body temperature levels when the aerosol enters the bronchial system and to compensate for the cooling effect on the way through the breathing air hose, the heating adapter must first heat the aerosol to a higher temperature. As a result, the maximum relative humidity is undercut in the heating section and subsequently condensate is formed by cooling, which is deposited on the wall of the breathing air hose. In this way, there is also the danger that larger drops of water will be carried along with the breath current.
Aus der FR-A-2 198 758 ist ein Respirator bekannt, mit dem eine hochfeuchte Luft, vorzugsweise nach der Sättigung unter Vermeidung der Bildung von Kondenswasser, geliefert werden soll. Hierzu ist u.a. am Ende des Zuführschlauches ein Temperaturfühler angeordnet, der über einen Temperaturregler die vom beheizbaren Zuführschlauch abgegebene Wärmemenge in vorgegebenen Bereichen regelt. Der Zuführschlauch ist hierbei aus einem flexiblen Rohr aus Kunststoff mit glatter Innen- und glatter Aussenwand gebildet, wobei in der Wandung ein elektrischer Widerstand spiralförmig eingearbeitet ist. Dieser in den Schlauch eingearbeitete Widerstand arbeitet als sekundärer Heizer. Der Gegenstand nach dieser FR-A bezieht sich also auf eine andere Gattung und besitzt keinen spiralförmigen Zuführschlauch.From FR-A-2 198 758 a respirator is known with which a highly humid air is to be supplied, preferably after saturation while avoiding the formation of condensed water. This includes At the end of the supply hose, a temperature sensor is arranged, which regulates the amount of heat emitted by the heatable supply hose in a predetermined range via a temperature controller. The feed hose is formed from a flexible tube made of plastic with a smooth inner and a smooth outer wall, an electrical resistance being incorporated in a spiral in the wall. This resistance built into the hose works as a secondary heater. The object according to this FR-A therefore refers to another genus and has no spiral feed hose.
Die in der US-A-4 121 583 beschriebene Vorrichtung bezieht sich auf ein tragbares Inhaliergerät für Asthma-Kranke. Der Patient inhaliert durch ein Mundstück warme und angefeuchtete Luft, die im Inneren des Generators modifiziert wird. Zwischen jeder Windung eines spiralförmigen Trägers ist eine Heizspirale eingeschlungen, wobei die Heizspirale durch einen zentralen Heizdraht mit einem Abdeckmaterial gebildet ist. Eine Anregung zur Erwärmung eines Aerosols im Atemluftschlauch einer Vorrichtung zur Erzeugung eines Aerosols konnte aus dieser US-A nicht entnommen werden.The device described in US-A-4 121 583 relates to a portable inhaler for asthma sufferers. The patient inhales warm and humidified air through a mouthpiece, which is modified inside the generator. A heating spiral is wrapped between each turn of a spiral carrier, the heating spiral being formed by a central heating wire with a covering material. A suggestion for heating an aerosol in the breathing air hose of a device for producing an aerosol could not be taken from this US-A.
Der vorliegenden Erfindung liegt die Aufgabe zugrunde, eine Vorrichtung der aufgezeigten Gattung so auszubilden, dass im gesamten Atemluftschlauch eine gleichmässige Erwärmung des Aerosols gewährleistet ist, ohne dass hierzu das Aerosol direkt mit den zur Erwärmung dienenden Heizdrähten in Berührung kommt, wobei Abweichungen von der vorgewählten Temperatur sofort erkennbar sind.The present invention is based on the object of designing a device of the type shown so that uniform heating of the aerosol is ensured in the entire breathing air hose without the aerosol coming into direct contact with the heating wires used for heating, with deviations from the preselected temperature are immediately recognizable.
Diese Aufgabe wird erfindungsgemäss dadurch gelöst, dass der oder die Heizdrähte in den Spiralen des Atemluftschlauches angeordnet sind oder diese bilden und dass zur Anzeige einer Abweichung der am Ausgang des Atemluftschlauches gemessenen Temperatur des abströmenden Aerosols von einer festgelegten Temperatur ein akustischer und/oder ein optischer Signalgeber angeordnet ist. Für die Stromzuführung zu den Heizdrähten kann eine aussenliegende Leitung angeordnet sein, die über einen Stecker am Gehäuse der Vorrichtung anschliessbar ist. Es besteht aber auch die Möglichkeit, die Stromzuführung zu den Heizdrähten an der Aussenseite der Verneblerkammer oder in der Verneblerkammer anzuordnen. Bei dieser Ausführung ist das Stromzuführungskabel zu den Heizdrähten optisch nicht sichtbar. Bei einer Anordnung der Stromzuführung zu den Heizdrähten in.der Verneblerkammer bietet es sich an, hierzu die senkrecht verlaufenden Luftkanäle zu benutzen.According to the invention, this object is achieved in that the heating wire or wires are arranged in or form the spirals of the breathing air hose and that an acoustic and / or an optical signal transmitter is used to indicate a deviation of the temperature of the outflowing aerosol measured at the outlet of the breathing air hose from a specified temperature is arranged. For the power supply to the heating wires, an external line can be arranged, which can be connected to the housing of the device via a plug. However, there is also the possibility of supplying the current to the heating wires on the outside of the nebuliser chamber or in the nebuliser chamber to arrange. In this version, the power supply cable to the heating wires is not visually visible. If the power supply to the heating wires is arranged in the nebuliser chamber, it is advisable to use the vertical air channels for this.
Da die Heizdrähte mit einem Schwachstrom von ca. 6-8 Volt gespeist werden, ist zweckmässigerweise im Gehäuse entweder ein entsprechend zugeordneter Transformator oder eine zusätzliche Wicklung an einem bereits vorhandenen Transformator angeordnet.Since the heating wires are fed with a weak current of approx. 6-8 volts, either a correspondingly assigned transformer or an additional winding on an already existing transformer is expediently arranged in the housing.
Durch die Erfindung ist die Möglichkeit geschaffen, das erzeugte Aerosol in einer jeweils festgelegten Temperatur dem Patienten zuzuführen, ohne dass die zur Aufheizung erforderlichen Heizdrähte mit dem Aerosol in Berührung kommen. Im gesamten Atemluftschlauch erfolgt eine gleichmässige Erwärmung des Aerosols. Da Aerosolgeräte auch bei Patienten eingesetzt werden, die selbst nicht in der Lage sind, Veränderungen der Temperatur des zugeführten Aerosols anzuzeigen, ist durch die Anordnung eines akustischen und/oder eines optischen Signalgebers immer die Gewähr gegeben, dass Abweichungen von der vorgegebenen Temperatur sofort erkannt und gegebenenfalls eine Korrektur vorgenommen werden kann.The invention creates the possibility of supplying the generated aerosol to the patient at a respectively fixed temperature without the heating wires required for heating coming into contact with the aerosol. The aerosol is heated evenly throughout the breathing air hose. Since aerosol devices are also used in patients who are not able to indicate changes in the temperature of the aerosol supplied, the arrangement of an acoustic and / or an optical signal generator always ensures that deviations from the specified temperature are immediately recognized and if necessary, a correction can be made.
Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und wird im folgenden näher beschrieben. Die einzige Figur zeigt schaubildlich eine Vorrichtung zur Erzeugung eines Aerosols.An embodiment of the invention is shown in the drawing and will be described in more detail below. The single figure shows a device for generating an aerosol.
Auf einem fahrbaren Unterbau 11 ist das Gehäuse 4 angeordnet. Auf der Oberseite dieses Gehäuses 4 ist eine abnehmbare Verneblerkammer 1 angeordnet. Ein Lüfterrad und ein Bakterienfilter sind in einer Atemluftkassette 2 zu einer Baueinheit zusammengeschlossen und neben der Verneblerkammer 1 abnehmbar angeordnet. Am Kammerdeckel 12 sind ein von einer in einer Flaschenhalterung 8 befestigten Einweg-Glasinfusionsflasche 7 kommender Verbindungsschlauch 9 und ein zum Patienten führender Atemschlauch 5, der zweckmässigerweise an einem Haltearm 6 geführt ist, angeordnet. Der spiralförmige Atemluftschlauch 5 ist beheizbar ausgebildet. Hierbei dienen die Stahlspiralen des flexiblen Atemluftschlauches 5 als Heizdrähte. Die Stromführung zu den Heizdrähten erfolgt über eine Zuführleitung 10. Über einem am Gehäuse 4 angeordneten Schalter 3 kann die Temperatur eingestellt werden. Der Schalter 13 dient zum Ein- und Ausschalten der Stromzufuhr für die Heizdrähte. Neben einem akustischen und/oder optischen Signalgeber, z.B. in Form einer Blinkleuchte, zur Anzeige einer Abweichung von der festgelegten Temperatur ist auf der Vorderseite des Gehäuses 4 noch eine Temperaturanzeige 14 vorgesehen.The housing 4 is arranged on a
Claims (5)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT85902460T ATE38156T1 (en) | 1984-05-19 | 1985-05-17 | DEVICE FOR HEATING AN AEROSOL. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE8415364U | 1984-05-19 | ||
DE19848415364U DE8415364U1 (en) | 1984-05-19 | 1984-05-19 | DEVICE FOR PRODUCING AN AEROSOL |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0214976A1 EP0214976A1 (en) | 1987-03-25 |
EP0214976B1 true EP0214976B1 (en) | 1988-10-26 |
Family
ID=6767072
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP85902460A Expired EP0214976B1 (en) | 1984-05-19 | 1985-05-17 | Device for heating an aerosol |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0214976B1 (en) |
DE (2) | DE8415364U1 (en) |
WO (1) | WO1985005276A1 (en) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2173274B (en) * | 1985-04-04 | 1989-02-01 | Boc Group Plc | Improvements in inhalation apparatus |
JPS6234574A (en) * | 1985-08-09 | 1987-02-14 | 日本ユ−ロテツク株式会社 | Heated and wet air feeder for treating nasitis |
DE3730551A1 (en) * | 1987-09-11 | 1989-03-30 | Annedore Kinnle Med Techn Zube | Respiratory gas humidifier |
FR2630651A1 (en) * | 1988-03-09 | 1989-11-03 | Joubert Paul | Vapour and ozone diffuser |
DE4034025A1 (en) * | 1990-10-25 | 1992-04-30 | Heyer Gmbh Carl | Inhalation device - has holder for accommodating fluid container incorporating insert cannula engaging through rubber plug in container |
DE202004006484U1 (en) * | 2004-04-21 | 2005-09-08 | GRÜNDLER GmbH | Heatable hose for artificial respiration, respiratory therapies and the like incorporates a temperature sensor which permanently extends into the hose interior |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2524522A (en) * | 1948-08-24 | 1950-10-03 | Gen Electric | Flexible hose of extrudable elastomeric composition |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1448473A (en) * | 1972-09-13 | 1976-09-08 | Grant G C | Vapour saturated gas delivery |
US4121583A (en) * | 1976-07-13 | 1978-10-24 | Wen Yuan Chen | Method and apparatus for alleviating asthma attacks |
US4291838A (en) * | 1979-12-26 | 1981-09-29 | C. R. Bard, Inc. | Nebulizer and associated heater |
-
1984
- 1984-05-19 DE DE19848415364U patent/DE8415364U1/en not_active Expired
-
1985
- 1985-05-17 WO PCT/DE1985/000167 patent/WO1985005276A1/en not_active Application Discontinuation
- 1985-05-17 DE DE8585902460T patent/DE3565775D1/en not_active Expired
- 1985-05-17 EP EP85902460A patent/EP0214976B1/en not_active Expired
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2524522A (en) * | 1948-08-24 | 1950-10-03 | Gen Electric | Flexible hose of extrudable elastomeric composition |
Also Published As
Publication number | Publication date |
---|---|
DE8415364U1 (en) | 1984-11-15 |
DE3565775D1 (en) | 1988-12-01 |
EP0214976A1 (en) | 1987-03-25 |
WO1985005276A1 (en) | 1985-12-05 |
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